* improvement: add some dark mode fixes
likely more will be necessary, but these make the login page look better
* chore: fix warning about missing `dark_image_class` override.
Co-authored-by: James Harton <james@harton.nz>
This causes two small changes in behaviour:
1. If you are currently customising the default components you can remove the configuration from your `config.exs` and instead move it to your router. This allows you to have multiple sign-in routes with different "themes" should that be necessary.
2. If you are using the components directly you need to pass the `overrides` array into each component.
